Perform the indicated operation and write the answer in simplest form.

A. 4
B. 13
C. 5
D. 5


Answer: A

Mathematics

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Find the GCD for the pair of natural numbers.84, 378

A. 6 B. 42 C. 14 D. 21

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Evaluate the integral.

A. 19 sin x - 19x cos x + C B. 19 sin x - x cos x + C C. 19 sin x - 19 cos x + C D. 19 sin x + 19x cos x + C

Mathematics

Solve the system of equations.7x + 7y + z = 1  x + 8y + 8z = 89x + y + 9z = 9

A. (1, -1, 1) B. (0, 1, 0) C. (-1, 1, 1) D. (0, 0, 1)

Mathematics

Use a calculator to find the function value to four decimal places.cot (2.27)

A. -1.5537 B. -0.8409 C. -1.1892 D. -0.6436

Mathematics